SE 
436. 
Pendulum, on maintaining the oscil- 
lations of, 75 
Pentagraph, on a. 240 
Peritoneum, on the, 364 
Perspective, method of drawing in, 
197, 276 
Pholas burrows, 150 
Photographs of Mercury, 123 
Planet, as a habitable world, 149 
Planetary configurations, 149 
Platza, city walls of, 331 
Platine, Chalumeau a, 117 
Plato, Thestetus, 27 
Pleiad, the lost, 144 
Plesiosaurus, new species of, 187 
Porismatic problems, 120 
Prism-circle, observations with, 351, 
357 
Prismatic structure in ice, 57 
Probability, subjective and objective, 
113 
Propelling vessels, on, 245 
Propositions numerically definite, 114 
Pterodactyles, 113, 130, 155, 186 
49 brain and metatarsus 
in, 129 
Purbeck, Isle of, 130 , 
Reflex action, on, 309 
Remontoir clock, 283 
Reptiles of the Kimmeridge Clay, 155 
Resistance to moving bodies, 160, 240, 
241 
Rete mirabile, the, 312 
Right-handedness, 361, 392 
Rocks, weathering of, 114 
Root of any function, 24 
Roslyn, or Roswell Hill Clay-pit, 51, 
268 é 
Rotatory motion, on a method of, 248 _ 
as model for transfer- 
ring, 197 
Sands, the Potton, 40, 99 
Saving life at sea, design for, 291 - ~ 
Sea terraces, elevated, 107 
Segmentation, on, 397 
Sextic torse, 153 
Shell, attraction of a thin, 213 
Ship, Hindu and Greek (apa: 298 
Skull, morphology of, 348 
» parietal bones ‘of, 321 
» and Skeleton, theory on, 11 
Solar dise, 149 
Spinal cord of mammals, 419 
Statics. diagrams in graphical, 407 
Steamship for conveying as, 197 
Stonehenge, 15 
Surface, cubic, model of, 219 A 
Be developable, 123 ‘ 
Surfaces, equilibrium of flexible, 145 
Syenite hills in Skye, Cirque in, 238 
& 
Teichopsia, 254 
Thucydides, rv. 30, 143 
Tidal phenomena, on, 152, 220 
Transmutation of species, &c., 116 
Tumuli, the Homeric, 13 
Tympanum, condition of, with refer- 
ence to sound, 217 
Upas Antiar, effects of, 398 
Uremic poisoning, on, 270 
Vases, group of figures on, 148 
Venus, transit of, 324 
Vertebrates, alimentary canal in, 373 
5 fossil remains of, 11 
segmental organs of, 377 
Violoncello, “Wolf” in, 369 
Vision, empirical theory of, 224 
Vital force, 419 
Volition, 149 
Vowel-letters and vowel-sounds, 306 
Wealden strata, 130 
Zirconia light, 117 
END OF VOL. II. 
vy 
CAMBRIDGE: PRINTED BY C. J. CLAY, M.A. AT THE UNIVERSITY PRESS. . 
